Figure 6
The horizontal axis ranges from 0 to 180 in increments of 20 units. The vertical axis lists eighteen journal and conference titles. From top to bottom, they are as follows: “Other (130 Journals)”, “Transportation Research Part C: Emerging Technologies”, “Sustainability”, “Drones”, “Expert Systems with Applications”, “I E E E Transactions on Intelligent Transportation Systems”, “I E E E Access”, “Networks”, “Transportation Research Part D: Transport and Environment”, “Computers and Industrial Engineering”, “European Journal of Operational Research”, “Applied Sciences”, “Computers and Operations Research”, “International Journal of Logistics Research and Applications”, “Transportation Research Part E: Logistics and Transportation”, “International Transactions in Operational Research”, “P L O S ONE”, and “Energies”. Each title has a corresponding horizontal bar indicating the number of relevant sources. The data for the bars are as follows: Other (130 Journals): 163. Transportation Research Part C: Emerging Technologies: 27. Sustainability: 13. Drones: 12. Expert Systems with Applications: 10. I E E E Transactions on Intelligent Transportation Systems: 9. I E E E Access: 8. Networks: 8. Transportation Research Part D: Transport and Environment: 7. Computers and Industrial Engineering: 7. European Journal of Operational Research: 7. Applied Sciences: 6. Computers and Operations Research: 6. International Journal of Logistics Research and Applications: 5. Transportation Research Part E: Logistics and Transportation: 5. International Transactions in Operational Research: 5. P L O S ONE: 5. Energies: 4. Note: All numerical data values are approximated.Distribution of articles by journals